DOS operating system source code, I would like to study in depth look at the operating system can be downloaded.

Packet : 7941931drdossrc.zip filelist
COMMAND/
COMMAND/BATCH.C
COMMAND/BIN/
COMMAND/BIN/BATCH.OBJ
COMMAND/BIN/CMDLIST.OBJ
COMMAND/BIN/COM.OBJ
COMMAND/BIN/COMCPY.OBJ
COMMAND/BIN/COMINT.OBJ
COMMAND/BIN/COMMAND.COM
COMMAND/BIN/COMMAND.EXE
COMMAND/BIN/CONFIG.OBJ
COMMAND/BIN/CRIT.OBJ
COMMAND/BIN/CSTART.OBJ
COMMAND/BIN/CSUP.OBJ
COMMAND/BIN/DOSIF.OBJ
COMMAND/BIN/GLOBAL.OBJ
COMMAND/BIN/HELPSTUB.OBJ
COMMAND/BIN/MESSAGE.OBJ
COMMAND/BIN/PRINTF.OBJ
COMMAND/BIN/RESIDENT.OBJ
COMMAND/BIN/SUPPORT.OBJ
COMMAND/BIN/TXHELP.BIN
COMMAND/BIN/TXHELP.EXE
COMMAND/BIN/TXHELP.OBJ
COMMAND/CHAR.DEF
COMMAND/CMDLIST.C
COMMAND/COM.C
COMMAND/COMCPY.C
COMMAND/COMINT.C
COMMAND/COMMAND.H
COMMAND/COMMAND.MAP
COMMAND/CONFIG.C
COMMAND/CRIT.ASM
COMMAND/CSTART.ASM
COMMAND/CSUP.ASM
COMMAND/DEFINES.H
COMMAND/DOS.H
COMMAND/DOSIF.ASM
COMMAND/DOSIF.H
COMMAND/DRIVER.EQU
COMMAND/F52DATA.DEF
COMMAND/GLOBAL.C
COMMAND/GLOBAL.H
COMMAND/HELP.H
COMMAND/HELPSTUB.ASM
COMMAND/IDLE.H
COMMAND/LOGIN.H
COMMAND/MAKE.BAT
COMMAND/MESSAGE.ASM
COMMAND/MESSAGE.DEF
COMMAND/MESSAGE.H
COMMAND/MSDOS.EQU
COMMAND/MSERROR.EQU
COMMAND/MSERROR.H
COMMAND/PORTAB.H
COMMAND/PRINTF.C
COMMAND/RESIDENT.ASM
COMMAND/RESIDENT.DEF
COMMAND/RESIDENT.H
COMMAND/RESP1
COMMAND/RESP2
COMMAND/RESP3
COMMAND/SECURITY.H
COMMAND/STRUCT.H
COMMAND/SUPPORT.C
COMMAND/SUPPORT.H
COMMAND/TOUPPER.H
COMMAND/TXHELP.ASM
COMMAND/TXHELP.DEF
COMMAND/TXHELP.H
COMMAND/TXLOGIN.H
IBMBIO/
IBMBIO/BDOSLDR.A86
IBMBIO/BDOSSTUB.A86
IBMBIO/BIN/
IBMBIO/BIN/BDOSLDR.OBJ
IBMBIO/BIN/BDOSSTUB.OBJ
IBMBIO/BIN/BIOS.MAP
IBMBIO/BIN/BIOSGRPS.OBJ
IBMBIO/BIN/BIOSINIT.OBJ
IBMBIO/BIN/BIOSMSGS.OBJ
IBMBIO/BIN/BIOSSTUB.LIB
IBMBIO/BIN/CLOCK.OBJ
IBMBIO/BIN/CONFIG.OBJ
IBMBIO/BIN/CONFSTUB.OBJ
IBMBIO/BIN/CONSOLE.OBJ
IBMBIO/BIN/DISK.OBJ
IBMBIO/BIN/GENERCFG.OBJ
IBMBIO/BIN/IBMBIO.COM
IBMBIO/BIN/INIT.OBJ
IBMBIO/BIN/INITMSGS.OBJ
IBMBIO/BIN/NLSFUNC.OBJ
IBMBIO/BIN/SERPAR.OBJ
IBMBIO/BIN/STACKS.OBJ
IBMBIO/BIOS.LNK
IBMBIO/BIOSGRPS.ASM
IBMBIO/BIOSGRPS.EQU
IBMBIO/BIOSINIT.A86
IBMBIO/BIOSMSGS.ASM
IBMBIO/BIOSMSGS.DEF
IBMBIO/BIOSMSGS.H
IBMBIO/BIOSSTUB.LIB
IBMBIO/BPB.EQU
IBMBIO/CHAR.DEF
IBMBIO/CLOCK.ASM
IBMBIO/CONFIG.A86
IBMBIO/CONFIG.EQU
IBMBIO/CONFSTUB.A86
IBMBIO/CONSOLE.ASM
IBMBIO/COUNTRY.DEF
IBMBIO/DISK.ASM
IBMBIO/DOSHNDL.DEF
IBMBIO/DRIVER.EQU
IBMBIO/DRMACROS.EQU
IBMBIO/F52DATA.DEF
IBMBIO/FDOS.EQU
IBMBIO/GENERCFG.A86
IBMBIO/IBMROS.EQU
IBMBIO/INIT.ASM
IBMBIO/INITMSGS.ASM
IBMBIO/INITMSGS.DEF
IBMBIO/INITMSGS.H
IBMBIO/MAKE.BAT
IBMBIO/MODFUNC.DEF
IBMBIO/MSDOS.EQU
IBMBIO/MSERROR.EQU
IBMBIO/NLSFUNC.A86
IBMBIO/PATCH.COD
IBMBIO/PSP.DEF
IBMBIO/REQHDR.EQU
IBMBIO/REQUEST.EQU
IBMBIO/SERPAR.ASM
IBMBIO/STACKS.ASM
IBMBIO/UDSC.EQU
IBMDOS/
IBMDOS/BDEVIO.A86
IBMDOS/BDOS.EQU
IBMDOS/BIN/
IBMDOS/BIN/BDEVIO.OBJ
IBMDOS/BIN/BUFFERS.OBJ
IBMDOS/BIN/CDEVIO.OBJ
IBMDOS/BIN/CIO.LST
IBMDOS/BIN/CIO.OBJ
IBMDOS/BIN/CIO.SYM
IBMDOS/BIN/CMDLINE.LST
IBMDOS/BIN/CMDLINE.OBJ
IBMDOS/BIN/CMDLINE.SYM
IBMDOS/BIN/DIRS.OBJ
IBMDOS/BIN/DISK.OBJ
IBMDOS/BIN/DOSMEM.LST
IBMDOS/BIN/DOSMEM.OBJ
IBMDOS/BIN/DOSMEM.SYM
IBMDOS/BIN/ERROR.LST
IBMDOS/BIN/ERROR.OBJ
IBMDOS/BIN/ERROR.SYM
IBMDOS/BIN/FCBS.LST
IBMDOS/BIN/FCBS.OBJ
IBMDOS/BIN/FCBS.SYM
IBMDOS/BIN/FDOS.OBJ
IBMDOS/BIN/FIOCTL.OBJ
IBMDOS/BIN/HEADER.OBJ
IBMDOS/BIN/HISTORY.LST
IBMDOS/BIN/HISTORY.OBJ
IBMDOS/BIN/HISTORY.SYM
IBMDOS/BIN/IBMDOS.COM
IBMDOS/BIN/IBMDOS.INP
IBMDOS/BIN/IBMDOS.MAP
IBMDOS/BIN/IBMDOS.SYM
IBMDOS/BIN/IBMDOS.TMP
IBMDOS/BIN/INT2F.OBJ
IBMDOS/BIN/IOCTL.OBJ
IBMDOS/BIN/MISC.OBJ
IBMDOS/BIN/NETWORK.LST
IBMDOS/BIN/NETWORK.OBJ
IBMDOS/BIN/NETWORK.SYM
IBMDOS/BIN/PCMIF.OBJ
IBMDOS/BIN/PROCESS.OBJ
IBMDOS/BIN/REDIR.OBJ
IBMDOS/BIN/SUPPORT.LST
IBMDOS/BIN/SUPPORT.OBJ
IBMDOS/BIN/SUPPORT.SYM
IBMDOS/BUFFERS.A86
IBMDOS/CDEVIO.A86
IBMDOS/CHAR.DEF
IBMDOS/CIO.A86
IBMDOS/CMDLINE.A86
IBMDOS/CMDLINE.EQU
IBMDOS/COUNTRY.A86
IBMDOS/COUNTRY.DEF
IBMDOS/DIRS.A86
IBMDOS/DISK.A86
IBMDOS/DOSHNDL.DEF
IBMDOS/DOSMEM.A86
IBMDOS/DRIVER.EQU
IBMDOS/ERROR.A86
IBMDOS/EXE.DEF
IBMDOS/F52DATA.DEF
IBMDOS/FCBS.A86
IBMDOS/FDOS.A86
IBMDOS/FDOS.DEF
IBMDOS/FDOS.EQU
IBMDOS/FIOCTL.A86
IBMDOS/FUNCS.FDO
IBMDOS/HEADER.A86
IBMDOS/HISTORY.A86
IBMDOS/IBMDOS.INP
IBMDOS/IBMDOS.MAP
IBMDOS/IBMDOS.SYM
IBMDOS/INT2F.A86
IBMDOS/IOCTL.A86
IBMDOS/MAKE.BAT
IBMDOS/MISC.A86
IBMDOS/MODFUNC.DEF
IBMDOS/MSDOS.EQU
IBMDOS/MSERROR.EQU
IBMDOS/NETWORK.A86
IBMDOS/PATCH.COD
IBMDOS/PCMIF.A86
IBMDOS/PCMODE.EQU
IBMDOS/PROCESS.A86
IBMDOS/PSP.DEF
IBMDOS/REDIR.A86
IBMDOS/REDIR.EQU
IBMDOS/REQHDR.EQU
IBMDOS/RH.EQU
IBMDOS/SUPPORT.A86
IBMDOS/UTILS.FDO
IBMDOS/VECTORS.DEF
LICENSE.TXT
LTOOLS/
LTOOLS/BIN2ASC.EXE
LTOOLS/COMPBDOS.EXE
LTOOLS/COMPBIOS.EXE
LTOOLS/EXE2BIN.EXE
LTOOLS/FIXUPP.EXE
LTOOLS/LINKCMD.EXE
LTOOLS/RASM86.EXE
LTOOLS/RASM_SH.EXE
README.TXT

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